Sedimentation tank for sewage treatment
By introducing a motor-driven sludge scraper and a concave structure into the sedimentation tank, combined with a dual sludge pump system and chemical spraying, the problems of water level rise and pump jamming caused by sludge deposition were solved, improving sewage treatment efficiency and preventing secondary pollution and algae growth.
Patent Information
- Application Number
- CN202521591779.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-07-29
AI Technical Summary
Existing sedimentation tanks suffer from problems such as sludge accumulation leading to increased water levels, reduced wastewater treatment efficiency, and sludge jamming pumps. They are also prone to causing secondary pollution and algae growth.
The system employs a motor-driven sludge scraper and a concave structural design, combined with a dual sludge pump system and a chemical spraying device, to achieve efficient sludge cleaning and prevent algae growth.
It improves sludge treatment efficiency, prevents pump damage, ensures wastewater treatment efficiency, prevents secondary pollution, and inhibits algae growth.
Smart Images

Figure CN224925661U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of sedimentation tanks for sewage treatment, and specifically to sedimentation tanks for sewage treatment. Background Technology
[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering, and is increasingly becoming a part of ordinary people's daily lives. Current technologies often use sedimentation tanks when treating some wastewater; however, the problem with ordinary sedimentation tanks is that: 1. Because a large amount of sludge accumulates at the bottom of the sedimentation tank, if the sludge is not cleaned in time, the water level will be too high; 2. Because a large amount of sludge will settle at the bottom of the sedimentation tank, it will cause secondary pollution to the water in the sedimentation tank and further reduce the efficiency of sewage treatment. 3. Because sludge may contain a large number of impurities, and sludge accumulates into clumps over time, it can easily cause the sludge pump to jam. Utility Model Content
[0003] This utility model addresses the above-mentioned problems by providing a sedimentation tank for wastewater treatment, which aims to improve sludge treatment efficiency; prevent large sludge from clogging the sludge pump and causing damage to the pump body; improve the sludge discharge efficiency at the bottom of the sedimentation tank; and prevent the growth of algae in the tank.
[0004] To solve the above problems, the technical solution provided by this utility model is as follows: A sedimentation tank for wastewater treatment includes a sedimentation tank, a mixing tank, a support unit, a motor housing, a drive motor, a connecting shaft, a first scraper, a second scraper, and a sludge discharge unit, wherein: The sedimentation tank is a barrel-shaped structure with an open top; the bottom of the sedimentation tank has a concave structure that gradually sinks from the edge to the bottom center; the sedimentation tank has a sedimentation chamber inside; the cooperating tank is fixedly installed at the bottom center of the sedimentation tank; the support unit is fixedly installed at the top of the sedimentation tank; the motor box is fixedly installed below the center of the support unit; the drive motor is fixedly installed inside the motor box; the output end of the drive motor is fixedly installed with a vertically downward connecting shaft; the first scraper and the second scraper are fixedly installed on both sides of the outer wall of the bottom end of the connecting shaft; the shapes of the first scraper and the second scraper match the concave structure at the bottom of the sedimentation tank; the sewage discharge unit is fixedly installed on the outer wall of the cooperating tank and communicates with the cooperating tank.
[0005] Preferably, the support unit includes a first connecting rod, a second connecting rod, and a third connecting rod; the bottoms of the first connecting rod and the third connecting rod are fixedly disposed at the two endpoints of the diameter of the top circle of the sedimentation tank; the tops of the first connecting rod and the third connecting rod are respectively fixedly connected to the second connecting rod; and the motor box is fixedly disposed below the center of the second connecting rod.
[0006] Preferably, a plurality of stirring blades are fixedly provided on the side wall of the portion of the connecting shaft that extends into the mixing tank.
[0007] Preferably, the sewage discharge unit includes a first housing, a first sludge pump, and a first sewage outlet pipe; the first sewage outlet pipe is connected to the mixing tank through the first sludge pump; the first sludge pump is fixedly installed inside the first housing; the first housing is fixedly installed on the side wall of the mixing tank and is used to protect the first sludge pump.
[0008] Preferably, the sewage discharge unit further includes a second housing, a second sludge pump, and a second sewage outlet pipe; the second sewage outlet pipe is connected to the mixing tank through the second sludge pump; the second sludge pump is fixedly installed inside the second housing; the second housing is fixedly installed on the side wall of the mixing tank away from the first housing, and is used to protect the second sludge pump.
[0009] Preferably, a spray box is fixedly installed at the top of the sedimentation tank; a storage box is fixedly installed at the upper part of the spray box; the storage box stores algae-removing agent; a water pump motor is fixedly installed at the bottom of the storage box; a spray nozzle is fixedly installed on the side wall of the spray box (19); the water pump motor draws the algae-removing agent in the storage box to the spray nozzle, and then the spray nozzle sprays the algae-removing agent into the sedimentation tank as needed to prevent the growth of algae.
[0010] Compared with the prior art, this utility model has the following advantages: Because this invention uses a motor-driven sludge scraping device and has a concave structure at the bottom of the sedimentation tank, it can effectively clean the settled sludge and improve sludge treatment efficiency.
[0011] Because this invention has multiple stirring blades on the connecting shaft inside the mixing tank, it can evenly stir the scraped sludge and prevent large sludge particles from getting stuck in the sludge pump and causing damage to the pump body.
[0012] Because the sewage discharge unit of this utility model adopts a dual sludge pump configuration, the sludge discharge efficiency at the bottom of the sedimentation tank is improved.
[0013] Because the sedimentation tank of this invention is equipped with a device for spraying medicine into the sedimentation tank, the growth of algae in the tank is effectively prevented. Attached Figure Description
[0014] Figure 1 This is a schematic isometric view of a sedimentation tank for wastewater treatment according to a specific embodiment of the present invention; Figure 2 This is a schematic front sectional view of a sedimentation tank for wastewater treatment according to a specific embodiment of the present utility model. Figure 3 This is a side view schematic diagram of a sedimentation tank for wastewater treatment according to a specific embodiment of the present utility model; Figure 4 This is an enlarged schematic diagram of the first sludge pump according to a specific embodiment of the present invention; Figure 5 for Figure 2 A magnified view of part A.
[0015] The components include: 1. First sludge discharge pipe; 2. First scraper blade; 3. First connecting rod; 4. Sedimentation tank; 5. Third connecting rod; 6. Motor housing; 7. Sedimentation chamber; 8. Connecting shaft; 9. Second scraper blade; 10. Drive motor; 11. First sludge pump; 12. First housing; 13. Agitator blade; 14. Second sludge pump; 15. Second housing; 16. Second sludge discharge pipe; 17. Mixing tank; 18. Second connecting rod; 19. Spraying box; 21. Storage box; 22. Pumping motor; 23. Spraying faucet; 24. Concave structure; S1. Support unit; S2. Sludge discharge unit. Detailed Implementation
[0016] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.
[0017] This utility model application claims protection for a sedimentation tank for wastewater treatment, such as... Figure 1 , 2 As shown in Figures 3 and 5, the system includes a sedimentation tank 4, a mixing tank 17, a support unit S1, a motor housing 6, a drive motor 10, a connecting shaft 8, a first scraper 2, a second scraper 9, and a sewage discharge unit S2, wherein: The sedimentation tank 4 is a barrel-shaped structure with an open top; the bottom of the sedimentation tank 4 has a concave structure 24 that gradually sinks from the edge to the bottom center; the sedimentation tank 4 has a sedimentation chamber 7 inside; a matching tank 17 is fixedly installed at the bottom center of the sedimentation tank 4; a support unit S1 is fixedly installed at the top of the sedimentation tank 4; a motor box 6 is fixedly installed below the center of the support unit S1; a drive motor 10 is fixedly installed inside the motor box 6; a vertically downward connecting shaft 8 is fixedly installed at the output end of the drive motor 10; a first scraper 2 and a second scraper 9 are fixedly installed on both sides of the outer wall at the bottom end of the connecting shaft 8; the shapes of the first scraper 2 and the second scraper 9 match the concave structure 24 at the bottom of the sedimentation tank 4; a sewage discharge unit S2 is fixedly installed on the outer wall of the matching tank 17 and communicates with the matching tank 17.
[0018] It should be noted that the support unit S1 includes a first connecting rod 3, a second connecting rod 18, and a third connecting rod 5; the bottoms of the first connecting rod 3 and the third connecting rod 5 are fixedly installed at the two ends of the diameter of the top circle of the sedimentation tank 4; the tops of the first connecting rod 3 and the third connecting rod 5 are respectively fixedly connected to the second connecting rod 18; a motor box 6 is fixedly installed below the center of the second connecting rod 18.
[0019] It should be noted that the double scraper blades of this utility model can scrape the sludge in the inner tank towards the bottom of the auxiliary tank 17.
[0020] It should be noted that multiple stirring blades 13 are fixedly installed on the side wall of the part of the connecting shaft 8 that extends into the mating tank 17.
[0021] It should be noted that, as Figure 4 As shown, the sewage discharge unit S2 includes a first housing 12, a first sludge pump 11, and a first sewage outlet pipe 1; the first sewage outlet pipe 1 is connected to the mixing tank 17 through the first sludge pump 11; the first sludge pump 11 is fixedly installed inside the first housing 12; the first housing 12 is fixedly installed on the side wall of the mixing tank 17 and is used to protect the first sludge pump 11.
[0022] It should be further explained that the sewage discharge unit S2 also includes a second housing 15, a second sludge pump 14, and a second sewage outlet pipe 16; the second sewage outlet pipe 16 is connected to the mixing tank 17 through the second sludge pump 14; the second sludge pump 14 is fixedly installed inside the second housing 15; the second housing 15 is fixedly installed on the side wall of the mixing tank 17 away from the first housing 12, and is used to protect the second sludge pump 14.
[0023] It should be further explained that the sludge pump provides the power source for extracting sludge from the device. The use of dual sludge pumps ensures efficient sludge extraction. The first housing 12 and the second housing 15 protect the internal sludge pumps from environmental influences. A sludge discharge pipe, in conjunction with the pumps, facilitates the discharge of sludge.
[0024] It should be noted that a spray box 19 is fixedly installed at the top of the sedimentation tank 4; a storage box 21 is fixedly installed at the upper part of the inside of the spray box 19; the storage box 21 stores algae-removing agent; a water pump motor 22 is fixedly installed at the bottom of the storage box 21; a spray nozzle 23 is fixedly installed on the side wall of the spray box 19; the water pump motor 22 draws the algae-removing agent in the storage box 21 to the spray nozzle 23, and then the algae-removing agent is sprayed into the sedimentation tank 4 as needed through the spray nozzle 23 to prevent the growth of algae.
[0025] It should be noted that the working principle of the sedimentation tank for sewage treatment of this utility model is as follows: the operator can scrape the sludge that has settled to the bottom by controlling the drive motor 10; the sludge inside is scraped into the mixing tank 17 by the first scraper 2 and the second scraper 9; the stirring blades 13 in the mixing tank 17 can stir the scraped sludge lumps evenly, thereby preventing large sludge lumps from getting stuck in the sludge pump and causing damage to the pump body; this device is equipped with two sludge pumps, and the dual sludge pumps enable the rapid extraction of sludge from the inside.
[0026] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the present invention is in a state with fewer features than all of the disclosed individual embodiments. Therefore, the appended claims are hereby clearly incorporated into the detailed description, wherein each claim stands alone as a preferred embodiment of the present invention.
[0027] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use this invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the widest scope of the principles and novel features disclosed in this application.
[0028] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."
[0029] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A sedimentation tank for wastewater treatment, characterized in that: It includes a sedimentation tank (4), a mixing tank (17), a support unit (S1), a motor box (6), a drive motor (10), a connecting shaft (8), a first scraper (2), a second scraper (9), and a sewage discharge unit (S2), wherein: The sedimentation tank (4) is a barrel-shaped structure with an open top; the bottom of the sedimentation tank (4) is provided with a concave structure (24) that gradually sinks from the edge to the bottom center; the sedimentation tank (4) is provided with a sedimentation chamber (7) inside; the matching tank (17) is fixedly installed at the bottom center of the sedimentation tank (4); the support unit (S1) is fixedly installed at the top of the sedimentation tank (4); the motor box (6) is fixedly installed below the center of the support unit (S1); the drive motor (10) is fixedly installed inside the motor box (6); the output end of the drive motor (10) is fixedly installed with a vertically downward connecting shaft (8); the bottom end of the connecting shaft (8) The first scraper (2) and the second scraper (9) are fixedly installed on both sides of the outer wall; the shape of the first scraper (2) and the second scraper (9) matches the concave structure (24) at the bottom of the sedimentation tank (4); the sewage discharge unit (S2) is fixedly installed on the outer wall of the combination tank (17) and communicates with the combination tank (17); a plurality of stirring blades (13) are fixedly installed on the side wall of the part of the connecting shaft (8) that extends into the combination tank (17); the sewage discharge unit (S2) includes a first housing (12), a first sludge pump (11), and a first sewage outlet pipe (1); the first sewage outlet pipe (1) is connected to the sedimentation tank (4) through the first sludge pump (11). The mixing tank (17) is connected; the first sludge pump (11) is fixedly installed inside the first housing (12); the first housing (12) is fixedly installed on the side wall of the mixing tank (17) and is used to protect the first sludge pump (11); the sewage discharge unit (S2) also includes a second housing (15), a second sludge pump (14), and a second sewage outlet pipe (16); the second sewage outlet pipe (16) is connected to the mixing tank (17) through the second sludge pump (14); the second sludge pump (14) is fixedly installed inside the second housing (15); the second housing (15) is fixedly installed on the mixing tank (17) away from the first housing (12). On one side wall of 12), and used to protect the second sludge pump (14); a spray box (19) is fixedly installed at the top of the sedimentation tank (4); a storage box (21) is fixedly installed at the upper inside of the spray box (19); the storage box (21) stores algae remover; a pump motor (22) is fixedly installed at the bottom of the storage box (21); a spray nozzle (23) is fixedly installed on the side wall of the spray box (19); the algae remover in the storage box (21) is pumped to the spray nozzle (23) by the pump motor (22), and then the algae remover is sprayed into the sedimentation tank (4) as needed by the spray nozzle (23) to prevent the growth of algae.
2. The sedimentation tank for wastewater treatment according to claim 1, characterized in that: The support unit (S1) includes a first connecting rod (3), a second connecting rod (18), and a third connecting rod (5); the bottoms of the first connecting rod (3) and the third connecting rod (5) are fixedly disposed at the two ends of the diameter of the top circle of the sedimentation tank (4); the tops of the first connecting rod (3) and the third connecting rod (5) are respectively fixedly connected to the second connecting rod (18); the motor box (6) is fixedly disposed below the center of the second connecting rod (18).
